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deblob-main 6.8 KB

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  1. #! /bin/sh
  2. # Copyright (C) 2008 Alexandre Oliva <lxoliva@fsfla.org>
  3. # This program is free software; you can redistribute it and/or modify
  4. # it under the terms of the GNU General Public License as published by
  5. # the Free Software Foundation; either version 2 of the License, or
  6. # (at your option) any later version.
  7. # This program is distributed in the hope that it will be useful, but
  8. # WITHOUT ANY WARRANTY; without even the implied warranty of
  9. # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. # General Public License for more details.
  11. # You should have received a copy of the GNU General Public License
  12. # along with this program; if not, write to the Free Software
  13. # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
  14. # USA
  15. # deblob.sh - prepare a linux-libre tarball out of a non-libre Linux
  16. # tarball. It expects the Linux release (mver, say 2.6.25) as the
  17. # first argument, the libre sub-release (extra) as the second optional
  18. # argument, and the patch release (sver, say .13) as an optional third
  19. # argument. mver and sver are pasted together to form kver.
  20. # linux-$kver.tar.bz2 and deblob-$mver must exist in the current
  21. # directory, and the line that sets kver and extra in deblob-$mver
  22. # must match mver and extra.
  23. # The resulting tarball is put in linux-$kver-libre$extra.tar.bz2, and
  24. # an uncompressed xdelta that produces linux-$kver-libre$extra.tar out
  25. # of linux-$kver.tar is created as linux-$kver-libre$extra.xdelta.
  26. # This xdelta can be distributed to enable third parties to easily
  27. # reconstruct the binary tarball starting out of sources downloaded
  28. # from kernel.org, but without distributing non-Free Software
  29. # yourself, because xdelta (unlike patches) is not reversible: the
  30. # removed bits are not present in it at all.
  31. # To enable you to check the differences between the tarballs, a patch
  32. # file is generated in linux-$kver-libre$extra.patch. This patch file
  33. # contains the non-Free blobs, even though in reversed form, so its
  34. # distribution is discouraged.
  35. # At the end, the script attempts to generate a digital signature for
  36. # the newly-created tarball. This is the last thing the script does,
  37. # so interrupting it at that point to skip the signing won't fail to
  38. # do anything else.
  39. # It is safe to interrupt the script at any other point. When it gets
  40. # a ^C (other than during signing), it starts cleaning up all of its
  41. # temporary and output files. If you insist, it may leave junk
  42. # behind, and then it will refuse to run again before you clean it up
  43. # by hand. It takes extra care to avoid overwriting useful files.
  44. mver=$1 extra=$2 sver=$3
  45. kver=$mver$sver libre=libre$extra
  46. deblob= dir=`echo $0 | sed 's,/[^/]*$,,'`
  47. if test ! -f linux-$kver.tar.bz2; then
  48. echo linux-$kver.tar.bz2 does not exist >&2
  49. exit 1
  50. fi
  51. if test -f deblob-$mver; then
  52. deblob=deblob-$mver
  53. elif test -f deblob; then
  54. deblob=deblob
  55. elif test -f $dir/deblob-$mver; then
  56. cp $dir/deblob-$mver deblob
  57. deblob=deblob
  58. else
  59. echo deblob does not exist >&2
  60. exit 1
  61. fi
  62. x1="kver=$mver extra=$extra"
  63. x2=`grep "^kver=[^ ]* extra=[0-9]*$" $deblob`
  64. if test "$x1" = "$x2"; then
  65. :
  66. else
  67. echo deblob script does not match command-line arguments >&2
  68. echo expected: $x1 >&2
  69. echo found : $x2 >&2
  70. exit 1
  71. fi
  72. if test -f linux-$kver-$libre.tar.bz2; then
  73. echo linux-$kver-$libre.tar.bz2 already exists >&2
  74. exit 1
  75. fi
  76. if test -f linux-$kver.tar; then
  77. echo linux-$kver.tar already exists >&2
  78. exit 1
  79. fi
  80. if test -f linux-$kver-$libre.tar; then
  81. echo linux-$kver-$libre.tar already exists >&2
  82. exit 1
  83. fi
  84. if test -f linux-$kver-$libre.patch; then
  85. echo linux-$kver-$libre.patch already exists >&2
  86. exit 1
  87. fi
  88. if test -f linux-$kver-$libre.xdelta; then
  89. echo linux-$kver-$libre.xdelta already exists >&2
  90. exit 1
  91. fi
  92. if test -d linux-$kver; then
  93. echo linux-$kver already exists >&2
  94. exit 1
  95. fi
  96. if test -d linux-$kver-$libre; then
  97. echo linux-$kver-$libre already exists >&2
  98. exit 1
  99. fi
  100. if test -d orig-linux-$kver; then
  101. echo orig-linux-$kver already exists >&2
  102. exit 1
  103. fi
  104. if test -f $dir/deblob-$kver; then
  105. if cmp $dir/deblob-$kver $deblob; then
  106. :
  107. else
  108. echo $dir/deblob-$kver and $deblob are different >&2
  109. exit 1
  110. fi
  111. fi
  112. if test ! -f deblob-check; then
  113. if test -f $dir/deblob-check; then
  114. cp $dir/deblob-check deblob-check
  115. fi
  116. else
  117. if test -f $dir/deblob-check; then
  118. if cmp $dir/deblob-check deblob-check; then
  119. :
  120. else
  121. echo $dir/deblob-check and deblob-check are different >&2
  122. exit 1
  123. fi
  124. fi
  125. fi
  126. trap "status=$?; echo cleaning up...; rm -rf orig-linux-$kver linux-$kver linux-$kver-$libre linux-$kver.tar linux-$kver-$libre.tar linux-$kver-$libre.tar.bz2 linux-$kver-$libre.patch linux-$kver-$libre.xdelta; (exit $status); exit" 0 1 2 15
  127. set -e
  128. echo Uncompressing linux-$kver.tar.bz2 into linux-$kver.tar
  129. rm -rf linux-$kver linux-$kver.tar
  130. bunzip2 < linux-$kver.tar.bz2 > linux-$kver.tar
  131. echo Extracing linux-$kver.tar into linux-$kver
  132. tar -xf linux-$kver.tar
  133. rm -rf linux-$kver-$libre linux-$kver-$libre.tar
  134. echo Copying linux-$kver to linux-$kver-$libre
  135. cp linux-$kver.tar linux-$kver-$libre.tar
  136. cp -lR linux-$kver/. linux-$kver-$libre
  137. echo Deblobbing within linux-$kver-$libre
  138. (cd linux-$kver-$libre && /bin/sh ../$deblob) || exit 1
  139. rm -f linux-$kver-$libre.patch
  140. # Do not copy these scripts for now, deblob-check regards itself as a blog.
  141. # cp -p $0 $deblob deblob-check linux-$kver-$libre
  142. echo Generating linux-$kver-$libre.patch
  143. diff -druN linux-$kver linux-$kver-$libre > linux-$kver-$libre.patch || :
  144. echo Removing removed or modified files from linux-$kver-$libre.tar
  145. diff -rq linux-$kver linux-$kver-$libre |
  146. sed -n "
  147. s,^Only in \\(linux-$kver\\(/.*\\)\\?\\): \\(.*\\),\1/\3,p;
  148. s,^Files \\(linux-$kver\\)/\\(.*\\) and \\1-$libre/\\2 differ,\\1/\\2,p;
  149. " |
  150. xargs tar --delete -f linux-$kver-$libre.tar
  151. echo Adding modified or added files to linux-$kver-$libre.tar
  152. rm -rf orig-linux-$kver
  153. mv linux-$kver orig-linux-$kver
  154. mv linux-$kver-$libre linux-$kver
  155. diff -rq orig-linux-$kver linux-$kver |
  156. sed -n "
  157. s,^Files orig-\\(linux-$kver/.*\\) and \\1 differ,\\1,p;
  158. s,^Only in \\(linux-$kver\\(/.*\\)\\?\\): \\(.*\\),\\1/\\3,p;
  159. " |
  160. xargs tar --append -f linux-$kver-$libre.tar
  161. echo Wiping out extracted trees
  162. rm -rf linux-$kver orig-linux-$kver
  163. echo Creating xdelta between linux-$kver.tar and linux-$kver-$libre.tar
  164. xdelta delta -0 linux-$kver.tar linux-$kver-$libre.tar linux-$kver-$libre.xdelta || :
  165. echo Compressing linux-$kver-$libre.tar and linux-$kver-$libre.xdelta
  166. rm -f linux-$kver.tar
  167. bzip2 -9 linux-$kver-$libre.tar linux-$kver-$libre.xdelta
  168. trap "status=$?; (exit $status); exit" 0 1 2 15
  169. echo Done except for signing, feel free to interrupt
  170. gpg -a --detach-sign linux-$kver-$libre.tar.bz2
  171. mv linux-$kver-$libre.tar.bz2.asc linux-$kver-$libre.tar.bz2.sign
  172. gpg -a --detach-sign linux-$kver-$libre.xdelta.bz2
  173. mv linux-$kver-$libre.xdelta.bz2.asc linux-$kver-$libre.xdelta.bz2.sign
  174. echo All set, please review linux-$kver-$libre.patch
  175. exit 0